Iran's atomic energy organisation announced on Sunday that an e-mail server belonging to one of its subsidiaries had been hacked from a foreign country, and material from that source had been published online.

Black Reward, an Iranian hacker collective, claimed in a statement posted on Twitter that it has leaked information about Iranian nuclear programs, calling the move a gesture of support for Iranian protesters.

According to Black Reward, the documents released included atomic development contracts and agreements with domestic and foreign partners; management and operational schedules of different parts of the Bushehr power plant; and passports and visas of Iranian and Russian specialists working there.

In a statement made on October 21, Black Reward threatened to reveal hacked data within 24 hours if the government did not free political prisoners and those detained during the uprising.